Answers Concepts in Probability and Statistics A Properties of Probability DistributionsQuestion 1

1

AssignmentMultiple Select

Properties of Probability Distributions

Question 1 • Concepts in Probability and Statistics A

Using the graph as a reference, select all statements that are true about a normal distribution of data.

Answer

A

Normal distributions are symmetrical about the mean, m.

B

The total area under the curve is 100.

C

Ninety-five percent of the data lies within 1 standard deviation of the mean.

D

The probability that an event is within 1 standard deviation above the mean is 34%.

E

All data sets are normally distributed.

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